Above, a weird little tool I found recently. It's only a couple of inches long. As you push the top section downward, the arms at the side extend outwards at the top, forming a more obtuse angle.
One of a huge number of now defunct British smoking pipe makers, the British Buttner Pipe Company, Ltd. was located in Glasgow, Scotland. One of their products was a Bakelite pipe equipped with a removable porcelain insert which acted as a filter:
|1947: Grace's Guide
In 1933, the company published a promotional pamphlet, From Annoyance - to Enjoyment: With the British Buttner Pipe : Containing the Original Buttner Ceramic Porous Filter.
Among their other distinctions, they made plastic ashtrays for the Queen Mary.
The device that I have is a self-adjusting pipe reamer for cleaning the pipe bowl. For a recent review, visit Hobo Pipes.